Metal-working machine



Sept. 9, 1924. 1,507,872

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Sept. 9, 1924. 1,507,872

B. L. VAN ORMAN METAL WORKING MACHINE Filed March 12. 1923 14Sheets-Sheet l2 gwucnfo a Ben L. Van Orman M id Sept. 9. 1924. 1,507,872

B. L. VAN OVRMAN METAL WORKING MACHINE Filed March 12. 1923 14Sheets-Sheet l Sept. 9 1924. 1,507,872 B. L. VAN ORMAN METAL WORKINGMACHINE Filed March 12. 1923 14 Sheets-Sheet 14 Berf L Van OrmanPatented Sept. 9,1924. I

ITE "STATES PATENT-OFFICE.

1mm 1.. VAN ORMAN, or HIGHLAND rnnx, MICHIGAN, AssIeNo a no I. A. roomINDUSTRIES, INCORPORATED, OF DETROIT,

MICHIGAN.

METAL-WORKING uncnnm useful Improvements in Metal-Working Machines, ofwhich the following is a specification.

This invention relates to improvements in metal working machines.

The main objects of this inventlon are:

First, to provide a machine for slitting and bending, or conforming,into U-shaped strips.

Second, to provide a machine for this purpose in which 'the stock isautomatically slitted and fed to the forming machine.

Third, to provide an improved metal bending machine adapted forsimultaneously forming a plurality of-strips.

Fourth, to provide an improved metal bendingmachine which is of largecapacity. Fifth, to provide an improved metal forming machine which.requires little attention on the part of the operator.

Sixth, to provide an improved metal forming machine having theseadvantages whichv is not likely to get out of repair.

straps of metal details and economies of. construction and operationwill definitely appear from the detailed description to follow. Iaccomplish the objects of my invention by the devices and meansdescribed'in'the following specification. The invention is clearlydefined and pointed out in the claims A structure which is a preferredembodiment of the invention is clearly illustrated in the accompanyingdrawing forming a part of this application, in which:

Figure 1, Sheet 1, is aside elevation of my improved metal forming andslitting ma chine, the parts being shown conventionally for conveniencein illustration. p

Fig. II, Sheet 2, is an enlarged side elevation of the slitting portionof the machine,

parts being shown conventionally for convenience in illustration.

Fig. III, Sheet 3, is a side elevation of theright-hand side of theparts shown in Fi .II- Fig. IV, Sheet 4:, is a line corresponding toline 4-4: of Fi II and III showing details of the, slitting verticalsection on a slitted into strips.

- Application filed March 12, 1928 Serial No. 624,599. g

mechanism, parts being shown in full lines for conven ence inillustration.

i F1 IV Sheet 9, is a detail vertical sect1on view through the'slittingrolls'with stock shown or-indicated therein.

Fig. V, Sheet 5, is a left-hand side elevation of the metal bendingportion of the machine.

Fig. VI, Sheet 6, is a right hand elevation of the metal bending portionof the machine.

Fig. VII, Sheet 7 is a rear end elevation of the metal forming portionof the machine, arts being sectioned and parts being partia y brokenaway for convenience in illustration.

Fig. VIII, Sheet 4., is an enlarged lefthand elevation showing detailsof the cut-ofi and delivery mechamsm.

Fig. IX, Sheet 1, is a plan view of the delivery end of thisfi re andFig. Vindicatingthe relathe machine, the lines AA of tion 0 this delivemechanism to the main portion of the mac e.

Fig. X, Sheet 1, isa detail section on a line corresponding to line 10-10 of Fig. IX

showinggetails of. the delivery mechanism. Fig. Sheet 7, is a detailsection on a line corresponding to line 11-11 of Fig. IX Furtherobjects, and objects pertaining to showing further details of thedelivery mechanism. v

Fig. XII, Sheet 7, is a detail longitudinal section of the deliverymechanism on a line corresponding to line 12'-12 of Figs. IX and XIFigs. XIII, Sheet 8, is a detail section on a line corres onding to line13-43 of Figs.

VII and XI showing details of the clutch for'controllin the deliverymechanism.

Fig. XIV, heet 8, is a detail view, par-- Fig. XV, Sheet 9, is a detailvertical section through the first'p-air of forming rolls on a linecorresponding to line 15-15 of tially in section, one line correspondingto] line 14.14;.0f Fig.v XIII.

Fi V, work being indicated in the rolls.

ig. XV, Sheet 9, is a detail section through the second pair of formingrolls on 5 of a line. corresponding to line 15 Fig. V. I v

ig. XVI, Sheet 9, is a plan view of a. section of stock.

Fig. XVII,

Sheet 9, is a plan'view of a tion of the stock after it has been cut orFig. XVIII, Sheet 9, is a perspective view of one of the completedstrips of U-crosssection.

Fig. XIX, Sheet 10, is a detail vertical section on a line correspondingto line 19-19 of F ig. V showing details of the stock guide means forthe first pair of forming rolls.

Fig. XX, Sheet 10, is a detail vertical section on a line correspondingto line 20--20 of Fig. V showing details of the work supporting andguiding means between the first and second airs of forming rolls.

Fig. XXI Sheet 11, is a detail side elevation of parts shown in Fig. V,certain'parts being vertically sectioned.

Fig. XXII, Sheet 11, 1s a detall vertical section on a line 22-22 ofFig. XXI.

Fig. XXIII, Sheet 11, is a detail horizontal section on a linecorresponding to line 2323 of Fig. XXI.

Fig. XXIV, Sheet 12, is a detail vertlcal section on a linecorresponding to line 2424 of Figs. V, XXI and XXIII show ng details ofthe work supporting and guiding means immediately at the rear of thesecond pair of forming rolls.

Fig. XXV, heet 12, is a detail vertlcal section through certain guidingrollers on a line corresponding to line 25-25 of Fig. V.

Fig. XXVI, Sheet 13, is a detail section on a line corresponding to line2626 of Fig. V showing details of the work supporting or guiding means.

Fig. XXVII, Sheet 14, is an enlarged side elevation of parts shown inFig. V.

Fig. XXVIII, Sheet 14, is a detail elevation looking from the left ofFig. XXVII. Fig. XXIX, Sheet 13, is a detail section on a linecorresponding to line 29-29 of Figs. XXVII and XXVIII.

Fig. XXX, Sheet12, is a detail vertical section on a line correspondingto line 3030 of Fig. V.

Fig. XXXI, Sheet 10, is a detail section on a line corresponding to line31-31 of Fig. V showing still further details of the supporting andguiding means for the formed stock.

Fig. XXXII, Sheet 1, is a wiring diagram showing wiring connections, foroperating the driving clutch from the cut-off mechanism.

In the drawings the sectional views are taken looking in the directionof the little arrows at the ends of the section lines and similarnumerals of reference indicate similar parts throughout the severalviews.

In Fig. I of the drawings the parts are illustrated in their generalrelation, the machine consisting, in general, of a slitting mechanism, aforming mechanism and cutoff and delivery mechanisms.

The stock designated at 1 in Fig. I, see also Fig. XVI, is a roll or s001 of band steel of such Width that it may e cut or slit into mergers apluralityof strips designated by the numeral 2, see Figs. IV and XVII,Sheet 9, the strips 2 being of such width that they may be bent intoU-cross-section to form the completed strip 3, see Fig. XVIII, Sheet 9.This particular strip is designed for use in the manufacture of springcushion structures for automobile cushions and upholstering generally.

I have illustrated my improvements in detail as I have embodied them inpractice in a machine for forming these strips, although it will beunderstood that my improvements are adapted for usein forming metal forother purposes, and, while the forming mechanism illustrated is designedfor forming three strips simultaneously, certain features of themechanism are readily adapted and desirable for use or embodiment inmachines designed to operate on single strips.

slitting mechanism-J will first describe the slitting mechanism. Thisslitting mechanism comprises a bed 4 supported on suita ble legs orpedestals 5, see Figs. I-IV inclusive. The slitting mechanismpropercomprises a pair of coacting slitting rolls 6 and 7, the roll 6having a central peripheral cutter 8 and the roll 7 having a pair ofperipheral cutters 9 spaced to coact with the cutter 8 securingtherewith a shearing action.

The roll 6 has a pair of peripheral flanges 10 which are spaced from thecutter 8 so as to embrace the cutters 9, the flanges 10 serving tosupport the outer strips 2 as theyare severed, Whereas, the intermediatestrip 2 is supported between the cutters 9, see Fig. IV, the distancebetween the inner ends of the flanges 10 being equal to the Width of thestock 1. By thus forming the cutters a uniform slitting of the stock isinsured.

The shaft 11 for the cutter 7 is carried in relatively fixed hearings inthe side members 12 of the frame. The shaft 13 of the cutter 6 iscarried in bearings 14 supported in slots 15 in the side members of theframe and adjusted by means of the screws 16 against the tension of thesprings 17, see Fig. IV. Each of the screws 16 is for convenience inadjustment provided with v a hand-wheel 18, the screws being providedwith sprockets connected by the sprocket chain 19 so that a uniformadjustment is secured. v

The cutter shafts are provided with a pair of meshing gears 20, a gear21 on the shaft 22 meshing with one of the gears 20. This shaft 22 has abevelled gear 23 at one end thereof, the gear 23 being driven from thebevelled pinion 24 on the shaft 25. This shaft 25 has a gear 26 thereonmeshing with a gear 27, these gears 26 and 27 being engaged within thegear-box 28.

The gear 27 is mounted on the shaft 29 carrying the pulley 30, thepulley being connected to this shaft by the clutch 31 shownconventionally in Fig. III. The pulley 30 is driven from the power belt32. The clutch 31 is controlled from the control lever 33 having apulley 34 adapted to rest on the slitted strips of stock 2. The lever 33is pivoted at 35 and has an arm 36 connected by the link 37 to theshifting lever 38 for the .in Fig. II. Thesefeed rolls are driven by thegears 40 and 41, see Fig. III. The upper feed roll is provided with anadjusting screw 42. As the structural details of these feed rolls formno part of this invention I do not further illustrate or describe thesame herein.

To provide means for stoppin the slitting mechanism, I provide a banlever 42 which is connected by the link 43 to an arm 44 on the clutchcontrol lever 33, see

'Fig. II.

Forming mechanism.-The stock is taken directly from the slitting machineby the forming machine which comprises a suitable bed 45, see Fig. V,and a frame member 46 mounted thereon, the forming parts being mainlymounted on the side of this frame as shown in Fig. V.

The forming mechanism comprises two pairs of coacting forming rolls 47and 48, and 49 and 50, see Figs. XV and XV Sheet 9. The forming roll 47has peripheral grooves 51 of rectangular cross section while the roll 48has annular peripheral ribs 52 of A-cross-section. The forming roll 49has peripheral grooves 53 of rectangular cross section, these groovesbeing relatively narrower and deeper than the grooves 51. The formingroll 50 has peripheral flangelike ribs 54 adapted to coa'ct with thegrooves 53, the coacting relation of the ribs and grooves of the formingrolls being clearly illustrated in Figs. XV and XV The stock is guidedto the first pair of forming rolls across a feed table 55 which has aretaining plate 56 under which the strips are guided. At the rear end ofthis feed table is a guide block 57 having a groove 58 in its faceadapted to receive the strips and support them laterally upon the feedtable 55, see Fig. XIX. Each of these guide blocks is provided with anadjusting screw 59, one of these being detailed in Fig. XIX, Sheet 10.These screws are provided with a pair of spaced collars 60 which embracethe guide blocks so that, as the screw is adjusted, the guide block isshifted laterally thereby making it possible to adjust the same toproperly guide the stock to the first forming rolls, 47, 48, by whichthe stock is bent into a V-cross-section as shown in Fig. XV.

Between the first and second pairs of forming rolls I provide asupporting table, a cross-section of which is shown in Fig. XX, Sheet10, comprising the base or bed member 61 having spaced V-shaped grooves62 in the face or top surface thereof of such dimensions as to receivethe partially conformed stock. A retaining plate 63 having longitudinalV-shaped ribs 64 is mounted on the table or bedpiece 61, thereby notonly guiding the stock, but preventing any distortion thereof as it isdelivered from the first pair of forming rolls to the second pair.

The stock is conformed by the second pair of formin rolls into aU-cross-section as shown in igs. XV and XVIII, Sheet 9. the stock beingthus gradually conformed to the desired shape.

The metal being placed under considerable stress during this formingoperation, there is a tendency for it to distort or twist. To preventthis and remove the torsion or.

twisting stresses, I provide supports 65 atv the rear of the second pairof forming rolls, these supports having tongues 66 which project intothe grooves 53, see Fig. XXI, Sheet 11, there being three of thesesupporting members 65 which are mounted on the bolt 67 and adjustablysupported thereon by means hereinafter described.

The retaining members 68 mounted above the members 65 have forwardlyprojecting tips 69 which engage within the channel of the conformedstock 3 as it leaves the rolls. Each of the guiding and supportingmembers 65 is adjusted laterally by means of the adjusting rods 70having eccentric pins 71 engaging the grooves 72 in the under side ofthe members 65, see Figs. XXI and XXII. These adjusting rods 70 arecarried by the sleeves 73 threaded into the supporting bracket 74 whichalso carries the bolt 67. The retaining members 68 are adjustablysupported on the verticall adjustable blocks 7 5, the lower ends of whicare supported by the screws 76. Set screws 77 through the top of thebracket clamp these parts in their adjusted position. These retainingmembers 68 are carried by a bolt 78. being spaced thereon by the sleeves79, see Figs. XXI and XXIII.

With the parts thus arranged they may be very accurately adjusted toreceive, support and guide the stock as it comes from the last formingrolls. As the stock leaves this supporting means just described, it isengaged by the peripheral flanges 80 of the rollers 81, see Figs. V andXXV. These rollers are loosely mounted on the stubshaft 82. The functionof these rollers is to further guide the conformed stock or strips.

From these rollers 81 the conformed stock passes to the supporting andguide roller. 83 which are arranged on a stub-shaft 84. these rollershaving peripheral grooves 85 of such dimensions as to receive the stock.

..'. mechanism is constantly These rollers are laterally adjustable uponthe shaft 84, the adjusting means comprising the screws 80, which engagethe adjusting members 87 pivoted at 88 and having tongues 89 engagingthe grooves of the rollers, one of these being shown in detail in Fig.XXVI. Coiled springs 90 on the screws hold the adjusting members 87against the head of the screws.

At the rear of and to engage within the stock is a set of guide rollers91, see Figs. V, XXVII and XXVIII. These guide rollers 91 are carried bythe vertically adjustable members 92, there being plates 93, 94 and 95interposed between these members 92 as shown in Figs. .XXVIII and XXIX,Sheets 13 and 14.

The adjusting screws96 carried by the lugs 97 and having grooved collars98- are provided for the roller carrying members, the members havingtongues or lugs 99 engaging the grooves as shown in Figs. XXVII andXXVIII. The plates are vertically slotted at 100 to receive the clampingbolt 101 so that after adjustment they may be clamped in adjustedposition.

The stock, as it leaves the supporting and guiding members 65, passesunder the rollers 81, which, as stated, have flanges engaging with thechannels of the conformed stock, over the rollers 83, being supportedwithin the grooves 85 thereof, under the rollers 91, which have V-shapedperipheries as shown in Fig. XXVIII. From these rollers 91 the stockpasses to the supporting plate 102, see Figs. .V and XXXI, from whenceit passes to the delivery and cut-oil mechanism.

Out-0 and delivery mechanism-This cut-off mechanism comprises areciprocating carriage 103 which is supported by the way 104 toreciprocate longitudinally of the machine, see Figs. V and VII. Thecarriage is returned and held normally in a forward position by means ofthe spring 105 which is connected to a lever 106 pivoted at 107 andconnected to the carriage by a link 108. The driving means for thiscarriage is substantially that shown in my application for LettersPatent filed May 15, 1922, Serial No. 561,085, and, in general,comprises a rlutch mechanism detailed in Figs. XIII and XIV of thepresent application. The driving clutch member 109 of this clutch driventhrough a sprocket wheel 110 connected thereto and the sprocket chain110, this sprocket chain being driven from a sprocket 111 on one of theforming roll shafts, see Fig. VI.

The driven clutch member 112 istoothed to coact with the driving member109 and is mounted for longitudinal movement relative thereto, beingurged to engaging osition by the coiled springs 113 carried by the pins114. The driven clutch member :nsoaeva is provided with a barrel-likehub 115 supported for longitudinal movement and havmg a longitudinalgroove-like slideway 116 therein for the driving dog 117. The clutchreleasing lug 118 is for convenience secured in this groove. The coiledspring 119 urges the driving dog 117 into engaging position, the sprinbeing arranged between the dog 117 and the lug 118.

The dog 117 and the lug 118 project into the path of the fingers 119 ofthe clutch releasing lever 120, which is held yieldin ly in clutchreleasing position by the coiIed spring 121. When the lever 120 isretracted the fingers 119 are drawn out of engagement with the lug 118allowing the driven clutch member to en age the driving clutch member,and also a1 owing the dog 117 to engage the notch 122 in the disk 124.This disk is carried by a shaft 125 having a sprocket 126 thereoncoacting with the sprocket chain 127 connected to the carriage 103 at128, see Fig. VIII, so that when the clutch is engaged the carriage isreciprocated.

The clutch is controlled by the rod 129 which is actuated by anelectromagnet shown conventionally at 130. The means 'for controllingthis electromagnet will be later described.

The conformed strips are delivered to the carriage which is providedwith a shear' block designated generally by the numeral 131, see Fig.XXX, and consisting of the longitudinally grooved shear block 132 hav mggrooves 133 to receive the conformed strips. A retaining or cover plate134 is held in position by the pins 135 and the screw 136.

The coacting cutter 137 is carried by the lever 138 pivoted at 139 andactuated by the cam 140, the cam being actuated by the gear 141 meshingwith a fixed rack 142 so that as the carriage is reciprocated the cam isactuated to actuate the cutter, severing the stock as indicated in Fig.VIII. The movement of the carriage is timed, that is, the speed of thecarriage corresponds to that of the work as it is discharged from theforming mechanism. The stock is severed on the rearward stroke of thecarriage and delivered to or guided to the carriage shear block on thereturn stroke, and is fed thereto until the predetermined length hasbeen delivered, the conformed material itself serving to control thecut-off mechanism.

A plan view of this cut-0E mechanism is shown in Fig. IX and consists ofa bar 142 carrying arms 143 carrying the rods 144. The work is deliveredto a trough comprising a pair of members 145 hinged at 146 on the rods144. The trough is actuated by cams 147 mounted on the plunger 148carried by the carriage. These cams engage the slotted arms or parts 149on the troughmembers 145 so that as the cams are reciprocated the troughmembers are 0 ened and closed,'the same eing shown in c osed position byfull lines in Fig. X and in open position in dotted lines, in whichposition they discharge the work, see Figs. X and XI.

As the work is delivered along the trough it engages the gate-liketappet 150 which is electrically connected by the wire 151 to theelectromagnet 130. This'tappet constitutes a contact member, it beinginsulated from the other metal parts, the electrical connection beingcompleted, however, through the stock itself which grounds in themachine, thus completing the circuit so that the electromagnet isactuated toactuate the clutch when the carriage is actuated, cutting offthe stock and, through the mechanism described, opening the trough todischarge the stock, thereby breaking the electrical connections anddisengaging the clutch.

The tappet or contact is mounted for adjustment so that the length ofthe stock may be controlled as desired, this adjustable mounting beingillustrated in Fig. XI.

The driving means for the forming rolls is illustrated in Figs. VI andVII, various arts being shown conventionally. The pulleys 152 which areboth mounted on the shaft 153 are connected to a suitable source ofpower by means of belts to secure a forward or reverse drive. The clutchindicated conventionally at 154. is adapted to connect either of thesepulleys to the shaft 153. The shaft 153 is provided with a gear, showndotted lines at 155, meshing with a gear 156 which drives the worm 157,which, in turn, drives the gear 158 on the shaft 159 disposedlongitudinally of the machine. This shaft is provided with bevelledgears 160 meshing with gears 161 on the shafts of the lower formingrolls, see dotted lines in Fig. VI. These shafts have gears 162,indicated by dotted lines, meshing with the gears 163 on the uppershafts of the forming rolls.

The upper forming rolls are provided with adjusting screws 16a and 165.The clutch 154 is provided with a clutch lever 166 connected by the link167 to an arm of the bell crank lever 168 which is, in turn,

connected by the link 169 to the control lever 170 positioned at aconvenient point for the operator at the front of the forming mechanism.

My improved slitting and forming machine is of large capacity andrequires comparatively little attention on the art of the operator. Thecost of the stoc in the relatively wide strips is very materially lessthan the cost of the narrower stock, that is, of stock of the properwidth for forming the U-shaped strips. The strips produced are of,uniform shape and are uniformly straight.

I have illustrated and described 111 improvements in an embodiment whichhave found very practical and efiicient. I have not attempted toillustrate or describe certam modifications or adaptations which Icontemplate as I believe the disclosure made will enable those skilledin the art to which my invention relates to embody or adopt the same asmay be desired.

Having thus described my-invention what I claim as new and desire tosecure by Letters Patent is: I

1. In a structure of the class described, the combination with a formingmeans comprising forming rolls adapted to simultaneously act upon aplurality of strips delivered thereto side by side, of a stock slittingmeans comprising feed rolls, slitting rolls, a driving means for saidfeed and slitting rolls comprising a clutch, and a clutch control leveradapted to rest upon the slitted stock between the slitting rolls andthe forming rolls whereby the clutch is controlled by the slitted stock.6'

2. In a structure of the class described, the combination with a formingmeans comprising forming rolls adapted to simultaneously act upon aplurality of strips of stock, a stock slitting means comprising feedrolls, slitting rolls, a driving means for sai feed and slitting rollscomprising a clutch, and means whereby the clutch is controlled by theslitted stock between the slitting rolls and the forming rolls..

3. In a structure of the class described, the combination with a formingmeans comprising forming rolls adapted to simultaneously act upon aplurality of strips of stock, of a stock slitting means comprising adriving means for said slitting means comprising a clutch, and a clutchcontrol lever adapted to engage the slitted stock between the slittingmeans and the forming rolls.

4:. In a structure of the class described, the combination with aforming means adapted to simultaneously act'upon a plurality of stripsof stock, a stock slitting means comprising feed rolls, slitting rolls,a driving means for said feed and slitting rolls comprising a clutch,and a clutch control means comprising a member engaging the stockbetween the slitting rolls and the forming means.

5. In a structure of the class described, the combination with a formingmeans adapted to simultaneously act upon a plurality of strips of stock,a stock slitting means, a driving means for said slitting meanscomprising a clutch, and a clutch control means comprising a memberengaging the stock between the slitting means and the forming means.

6. In a structure of the class described, the combination of a pair ofinitial coacting forming rolls, one of which has periphing formingrolls,

, in alignment with eral grooves of rectangular cross section and theother coacting peripheral ribs having A-shaped peripheries, a secondpair of coacting forming rolls, one of which has peripheral grooves of adimension adapted to receive the conformed stock, and the otherperipheral flanges coacting with said grooves to form the stock, a stockfeeding table disposed in advance of the first pair of forming rolls,uide blocks adjustable on said feed table aving grooves in their undersides adapted to en age the strips for guiding them upon sai feedingtable, screws provided with spaced collars engaging said blocks wherebythey may be individually adjusted laterally to guide the stock to theforming rolls, a support disposed between the pairs of forming rolls inalignment with the bites thereof and having V-shaped grooves thereinconformed tothe material as discharged from the first forming rolls, aretaining plate having V- shaped ribs on its under side coacting withsaid grooves to support the stock therein as it is guided to the secondpair of forming rolls, supporting and guiding members disposed. at therear of the second pair of forming rolls and projecting into the groovesof the grooved roll, said members having work channels and beingsupported for verticaland lateral adjustment, coacting retaining membershaving tongues projecting forwardly into the c annels to engage the workas it is delivered from the second pair of forming rolls, channeledsupporting rollers disposed at the rear of said supporting and guidingmembers in spaced relation thereto, means for laterally andindependently adjusting said supporting rollers, laterally floatingretaining rollers disposed in advance of said supporting rollers andhaving peripheral flanges adapted to engage within the c of the work,retaining and guiding rollers disposed above and at the rear of saidporting rollers and adapted to engage within the conformed worksupported by such rollers, means for vertically adjusting said retainingand guiding rollers, a channeled guide member disposed at the rear ofsaid rollers, and a reciprocating carriage provided with cut-ofi' meansdisposed at the rear thereof.

7. In a structure of the class described, the combination of a pair ofinitial coactone of which has peripheral grooves of rectangular crosssection and the other coacting peripheral ribs having A-shapedperipheries, a second pair of coacting forming rolls, one of which hasperipheral grooves of a dimension adapted to receive the conformed stockand the other peripheral flanges coacting with said grooves to form thestock, a support disposed between the pairs of forming rolls the bitesthereof and forming rolls, a retaining plate having V-.

shaped ribs on its under side coacting with said grooves to support thestock therein as it 1s guided to the second pair of forming rolls,supporting and guiding members disposed at the rear of the second pairof forming rolls and projecting into the grooves of the grooved roll,said members having work channels and being supported for vertical andlateral adjustment, coacting retaining members having tongues projectingforwardly into the channels to engage the work pair of forming rolls,channeled support ing rollers disposed at the rear of said supportingand guiding members in spaced relation thereto, means for laterally andin dependently adjusting such supporting r0ll ers, laterally floatingretaining rollers disposed in advance of said supporting rollers andhaving peripheral flanges adapted as it is delivered from the second toengage within the channels of the Work,

retaining and guiding .rollers disposed above and at the rear of saidsupporting rollers and adapted to engage within the conformed worksupported by such rollers, means for vertically adjusting said retainingand guiding rollers, a channeled guide member disposed at the rear ofsaid rollers, and a reciprocating carriage provided with cut-oil meansdisposed at the rear thereof.

8. In a structure of the class described, the combination of a pair ofinitial coacting forming rolls, one of which has peripheral grooves ofrectangular cross section and the other coacting peripheral ribs havingA- shaped peripheries, a second pair of coacting forming rolls, one ofwhich has peripheral grooves of a dimension adapted to receive theconformed stock and the other peripheral flanges coacting with saidgrooves to form the stock, a stock feeding table disposed in advance ofthe first pair of forming rolls, guide blocks adjustable on said feedtable having grooves in their under sides adapted to engage the stripsfor guiding them upon said feeding table, screws provided with spacedcollars engaging with said blocks whereby they may be individuallyadjusted laterally to guide the stock to the forming rolls, supportingand guiding members disposed at the rear of the second pair of formingrolls and projecting into the grooves of the grooved roll, said membershaving work channels and being supported for vertical and lateraladjustment, coacting retaining members having tongues projectingforwardly into the channels to engage the work as it is delivered fromthe second pair of forming rolls. channeled supporting rollers disposedat the rear of said supporting and guiding members in spaced relationthereto, means for laterally and independently ad-

